TO ALL THOSE WHO THINK THIS MOVIE HAD NO CONSEQUENCE:
Really, all of you are either
1: marvel fans, just trying to trash dc movies.
2: animation lovers who came to see it because of it's high ranking.
3: dc fans who don't know anything about dc comics :facepalm:
changing timeline HAS consequences. It is the new 52 era, so prepare to see monitors being pissed by that flashpoint and bring about the final crisis (Monitors live in time stream, where alterations to timeline doesn't change anything there)
On the other hand, you can be prepared to see paradox being HIGHLY superpowered by that HUGE change this flashpoint will cause... I doubt even an army of superman clones can stop that Pradox... (Read Flash #88, #750-#755 for more info on paradox)
Changing timeline, aka, flashpoint = A disaster far beyond what darkseid brought about here.... They just didn't do it until it was the "only option" the earth was literally going to either burn, or freeze (not a temporary ice age, but a permanent unlivable situation)